@article{GDZPPN001183869,
title = {A Multi-Grid Algorithm for Mixed Problems with Penalty.},
journal = {Numerische Mathematik},
volume = {58},
year = {1990},
pages = {227-248},
zbl = {0712.73106},
url = {http://dml.mathdoc.fr/item/GDZPPN001183869}
}
Huang, Ziping. A Multi-Grid Algorithm for Mixed Problems with Penalty.. Numerische Mathematik, Tome 58 (1990) pp. 227-248. http://gdmltest.u-ga.fr/item/GDZPPN001183869/